单词：discolo(u)ration effect
单词：discolo(u)ration effect 相关文章
By Paul Thompson VOICE ONE: This is Bob Doughty. VOICE TWO: And this is Doug Johnson with the VOA Special English program EXPLORATIONS. Today we tell about some of the important space news of the past
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By Nancy Steinbach Broadcast: November 19, 2003 This is Phoebe Zimmermann with the VOA Special English Health Report. When scientists want to test the effectiveness of a new drug, they usually divide
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EXPLORATIONS – July 3, 2002: Life on the International Space Station By Paul Thompson VOICE ONE: This is Mary Tillotson. VOICE TWO: And this is Steve Ember with the VOA Special English program EXPLO
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As Haiti tries to recover from the disaster, one of the greatest challenges will be rebuilding infrastructure that includes good sanitation, clean water, and meals for the displaced. But the mental health of thousands of Haitians will be an issue lon
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NASA Art Captures 50 Years of Exploration One of the nation's most prolific art collectors is the U.S. space agency. For nearly a half-century, NASA has commissioned artists to document its missions and projects. Seventy of the 3,000 works in its col
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今天我们要学的词是side effect。 Side effect, 副作用。一项最近民调显示，Most Americans want health reform but fear its potential side effects, 大多数美国人都希望看到医疗改革，但是又担心改革可能带来的副
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